Skip to main content

"Uncaught TypeError: document.getElementById(...) is null" Error in JavaScript [duplicate]

I am currently learning JavaScript and I have a problem in my function(s). It's a code that convert a specific amount of EUR / USD / YEN in the other currencies and paste them in a table. I'll paste the css-code too for the optics.

Important: The Program is not finished yet, you need to start the function in your browser console, it won't work automatically Example for the console:

EURUmrechnen(amount)
function EURInUSD(EUR) { /* The calculation of the currencies */
  return EUR * 1.0537;
}

/* --- */

function EURInYEN(EUR) {
  return EUR * 135.277;
}

/* --- */

function USDInEUR(USD) {
  return USD * 0.9485;
}

/* --- */

function USDInYEN(USD) {
  return USD * 127.7625;
}

/* --- */

function YENInEUR(YEN) {
  return YEN * 0.007393;
}

/* --- */

function YENInUSD(YEN) {
  return YEN * 0.007826;
}



function EURUmrechnen(EUR) { /* This EUR-Calculator works as it should. */
  document.getElementById("USD-Eingabe").value = EURInUSD(EUR);
  document.getElementById("YEN-Eingabe").value = EURInYEN(EUR);
}

function USDUmrechnen(USD) { /* USD and YEN Calculator give the Error you can find in the title. */
  document.getElementById("EUR-Eingabe").value = USDInEUR(USD);
  document.getElementById("YEN-Eingabe").value = USDInYEN(USD);
}

function YENUmrechnen(YEN) {
  document.getElementById("EUR-Eingabe").value = YENInEUR(YEN);
  document.getElementById("USD-Eingabe").value = YENInUSD(YEN);
}
.Umrechner {
  display: flex;
  justify-content: center;
  align-items: center;
}

.Eingabefeld {
  display: flex;
  flex-direction: column;
  margin: 0px 16px;
  border: 1px solid #dadada;
  max-width: 25%;
}

.Umrechner input {
  border: none;
  border-bottom: 1px solid #dadada;
  appearance: textfield;
}

.Umrechner input:focus {
  outline: none;
}

.Umrechner input,
.Umrechner label {
  padding: .5em;
  text-align: center;
}

.Umrechner * {
  font-family: sans-serif, "Arial", "Helvetica";
  font-size: 1.5rem;
}
<!DOCTYPE html>
<html lang="de">

<head>
  <meta charset="UTF-8">
  <link rel="stylesheet" href="style.css">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Umrechner</title>
  <script src="scripts.js" defer></script>
</head>

<body>
  <div class="Umrechner">

    <div class="Eingabefeld">
      <input type="number" step="any" id="Euro-Eingabe">
      <label for="Euro-Eingabe">Euro</label>
    </div>
    <div class="gleichzeichen">=</div>

    <div class="Eingabefeld">
      <input type="number" step="any" id="USD-Eingabe">
      <label for="USD-Eingabe">USD</label>
    </div>
    <div class="gleichzeichen">=</div>

    <div class="Eingabefeld">
      <input type="number" step="any" id="YEN-Eingabe">
      <label for="YEN-Eingabe">YEN</label>
    </div>


  </div>
</body>

</html>

Thanks for your help!

Via Active questions tagged javascript - Stack Overflow https://ift.tt/pNBYJOw

Comments

Popular posts from this blog

Confusion between commands.Bot and discord.Client | Which one should I use?

Whenever you look at YouTube tutorials or code from this website there is a real variation. Some developers use client = discord.Client(intents=intents) while the others use bot = commands.Bot(command_prefix="something", intents=intents) . Now I know slightly about the difference but I get errors from different places from my code when I use either of them and its confusing. Especially since there has a few changes over the years in discord.py it is hard to find the real difference. I tried sticking to discord.Client then I found that there are more features in commands.Bot . Then I found errors when using commands.Bot . An example of this is: When I try to use commands.Bot client = commands.Bot(command_prefix=">",intents=intents) async def load(): for filename in os.listdir("./Cogs"): if filename.endswith(".py"): client.load_extension(f"Cogs.{filename[:-3]}") The above doesnt giveany response from my Cogs ...

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...